222111122211 has 48 divisors (see below), whose sum is σ = 363783813120. Its totient is φ = 129396432960.

The previous prime is 222111122161. The next prime is 222111122221. The reversal of 222111122211 is 112221111222.

222111122211 is a `hidden beast` number, since 222 + 111 + 122 + 211 = 666.

It is not a de Polignac number, because 222111122211 - 2¹⁷ = 222110991139 is a prime.

It is a zygodrome in base 10.

It is not an unprimeable number, because it can be changed into a prime (222111122221) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 61251 + ... + 669308.

It is an arithmetic number, because the mean of its divisors is an integer number (7578829440).

Almost surely, 2^222111122211 is an apocalyptic number.

222111122211 is a deficient number, since it is larger than the sum of its proper divisors (141672690909).

222111122211 is a wasteful number, since it uses less digits than its factorization.

222111122211 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 730696 (or 730693 counting only the distinct ones).

The product of its digits is 64, while the sum is 18.

Adding to 222111122211 its reverse (112221111222), we get a palindrome (334332233433).

It can be divided in two parts, 2221111222 and 11, that multiplied together give a palindrome (24432223442).

The spelling of 222111122211 in words is "two hundred twenty-two billion, one hundred eleven million, one hundred twenty-two thousand, two hundred eleven".